Investigation Discovery HD (Pacific)

A New Hampshire town reels after police arrest four teenagers for robbing and murdering a 42-year-old mother and maiming her 11-year-old daughter; detectives uncover two suspects with the characteristics of sadistic psychopaths.

Investigators search a farm for a missing man and find a human leg bone on the property; the owner, Susan Monica, admits that her pigs ate her tenant alive, and he's not the only victim; Monica despises humans but loves her pigs.

A single mother overcoming addiction struggles to raise her son and daughter. Despite what appears to be a loving family and a sibling bond she could only hope for, she never could have foreseen the true monster that lies within her 13-year-old son.

A New Hampshire town reels after police arrest four teenagers for robbing and murdering a 42-year-old mother and maiming her 11-year-old daughter; detectives uncover two suspects with the characteristics of sadistic psychopaths.

Investigators search a farm for a missing man and find a human leg bone on the property; the owner, Susan Monica, admits that her pigs ate her tenant alive, and he's not the only victim; Monica despises humans but loves her pigs.

Teresa Holman spends much of her childhood wishing her father, Freddie Bowen, would die for the things he does to his family, but when presented with a chance to get her wish, the choice she makes has unforeseen consequences and leads to tragedy.

During the day, Lorenzo Gilyard is a soft-spoken and well-liked man, but at night, he's a monster, preying on women; his best friend, a trained social worker, misses the signs; going inside the prison to get answers from the notorious serial killer.

Michelle looks up to her father, but over time, fear and disgust replaces respect; as a teen, her world changes forever as horrific revelations buried for years finally emerge; Michelle's father must answer for his crimes.

A skeleton is discovered on the edge of a high school football field, during a game of catch. It takes a forensic sculptor, tireless detective work, and some luck, to finally bring the mysterious killer to justice.

A birthday ends in tragedy when a beloved family is found brutally murdered; detectives are left in the dark until a chance encounter changes everything.

A 17-year-old aspiring artist is found dead in an abandoned house; a devastated family worries the case will never be solved, but 13 years later a lucky break in DNA technology points detectives in the right direction.

A police officer tracks down an armed carjacker and comes under heavy fire; a stabbing in broad daylight forces the police to take decisive action; a routine traffic stop results in a shot officer who fights for his life.

A detective leads his heavily armed team on a search warrant but ends up in the firing line himself; a routine traffic stop turns violent as the suspect makes a getaway; a knife-wielding man draws police into a foot chase.

Two police officers respond to a domestic disturbance; a house fire turns into a murder investigation; the search for a known sex offender builds to its conclusion.

A domestic dispute turns into a hostage situation with children's lives at stake; a vehicular accident turns into a multiple murder with armed killers on the run; a disturbance at a liquor store leaves an officer fighting for his life.

A breakup turns dangerous; a traffic stop puts a child's life at risk; a killer on the run leaves a state trooper fighting for his life.

In Kinston, N.C., a woman finds Jack Davis in his home with a head wound; Surveillance footage from Jack's house and a nearby neighbor's leads detectives on the hunt for his violent attackers.

When Laura Pietscher, a 28-year-old resident of Sebring, Fla., turns up dead in a dumpster 90 miles away in Tampa, detectives turn to CCTV footage to trace her fatal journey and identify her murderer.

In Baltimore, a killer strangles two women to death less than a week apart; investigators piece together the clues from CCTV footage from the locations of the two homicides to reveal a suspect with designs on becoming a serial killer.

When police find 27-year-old Corey Lee Hughes dying on his kitchen floor, they turn to security video to find his attacker; a neighbor's camera captures a suspicious SUV leaving the scene; investigators follow the clues to track down its driver.

In a home in downtown Baltimore, a man finds 24-year-old father and youth worker Dion Smith executed with a shotgun. The other residents are cagey, but a suspicious visitor is singled out thanks to telling CCTV outside the victim's door.

In Cleveland, Texas, a man guns down Conbino Crasto during a gas station robbery; surveillance video sends police on a hunt for three masked suspects.

Two employees of Dayton, a bar in Ohio, are beaten to death; on the case, Det. Doyle Burke investigates a series of bizarre clues, including a citywide KKK rally and a mysterious confession letter from The Devil postmarked from Hell.

An unknown killer executes a seemingly perfect family in their upscale Florida home. As detective EvaMarie Multari searches for answers, she uncovers hidden family tensions and a maniacal scheme driven by an obsessive love affair with a webcam model.